If you fret one string at the last fret you should have the same distance from the bottom of the string to the polepiece on both pickups.
That's why the bridge pickup is higher than the neck pickup.
Cool. I went ahead and tightened the screws to make the pickup heights all essentially equal. They're set at 3/32" now (pressing on string at last fret). Previously, they were 2.5/32" (neck) and under 2/32" (bridge). Even 3/32 seems low but I want to make sure the output isn't dropped too much and I now have enough "depth" to dig in when needed. Thanks for the help!

